Smart drill
Uses your error rate and reaction time per key to pick words heavy in the letters you struggle with. Weak keys show above the text.
Random text helps a little. Practice aimed at the exact keys that slow you down helps a lot. Typing Summit measures every keystroke and builds drills around your weak spots.
Several short drills of 30 to 50 words with full focus beat one long distracted session. Stop when your accuracy starts dropping.
In practice, yes. Correcting builds awareness. In speed tests, keep going and watch your accuracy instead.